[libfuzzer] Clobber fuzzer-test-suite and build output if needed

git-svn-id: https://llvm.org/svn/llvm-project/zorg/trunk@370158 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/zorg/buildbot/builders/sanitizers/buildbot_fuzzer.sh b/zorg/buildbot/builders/sanitizers/buildbot_fuzzer.sh
index dc04895..2066a38 100755
--- a/zorg/buildbot/builders/sanitizers/buildbot_fuzzer.sh
+++ b/zorg/buildbot/builders/sanitizers/buildbot_fuzzer.sh
@@ -22,6 +22,8 @@
 # Also, the Fuzzer does not provide reproducers on assertion failures yet.
 CMAKE_COMMON_OPTIONS="-GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=OFF -DLLVM_PARALLEL_LINK_JOBS=8 -DLIBFUZZER_ENABLE_TESTS=ON"
 
+CLOBBER=fuzzer-test-suite
+STAGE1_CLOBBER="RUNDIR-*"
 clobber
 
 # Make sure asan intercepts SIGABRT so that the fuzzer can print the test cases